I am a seasoned computer tech/consultant, professionally for 10 years. I have a client with 2 computers, simple HP desktops Pentium 4 processors. Both are identical. 4 gig ram, XP, 40 gig SATA hard drives.
As of two weeks ago one of them started churning slowly
I went onsite yesturday and spent 3 hours between the 2 computers tuning them up, checking for viruses, rootkits, etc. The 2nd computer is running great. But computer #1 after doing everything i can think of, is still churning slow slow slow. I feel like it might be the hard drive going out, but it passes the diag tests.
Things i have done:
Disabled all but a few startup programs
Disable all services that are not needed
Set page file to optimal setting
Cleanup registry, junk files, etc
Here is where it gets tricky: in Safe mode, it runs great, fast, responsive. In normal mode, it runs slow, churning the hard drive ever so slowly
This is a very simple setup no advanced software etc